I have had a look in the preprocess_page hook and i can't work out how to do this. I have added a custom field called "thumbnail_url" to the blog post type. But when the blog post is displayed Drupal is automatically putting the image tag to the bottom of the post.
I actually want to move the image above the post content, but i can't work out how i would do it. So it's basically taking the custom variable and adding it to the end of the content.
